Science ❯ Earth Sciences ❯ Geology
Cretaceous Period Dinosaur Fossils Fossil Discoveries Prehistoric Life Jurassic Period Fossil Analysis Triassic Period Pleistocene Epoch Cambrian Period Ancient Life Whale Fossils Cololites Oligocene Epoch Fossil Discovery Fossil Preservation Posidonia Shale Fossil Record Paleobotany Lower Cretaceous Period Ichnology Dinosaur Footprints Fossilized Skin Fossilized Stomach Contents Fossilization Processes Romualdo Formation Trace Fossils Paleontological Discoveries Fossil Tracks Isotope Analysis Preservation Techniques Fossil Birds Antarctic Fossils Footprints
Exceptionally preserved vertebrae with growth rings let researchers gauge its size, supporting a much earlier origin for ocean-going giants.